Display device

Abstract

An embodiment of the present disclosure provides a display device including a substrate including a display area in which a plurality of pixel groups are disposed and a peripheral area disposed around the display area, and a plurality of alignment keys disposed on the substrate, wherein each of the pixel groups may include a plurality of pixels displaying different colors, and the plurality of alignment keys may include first alignment keys that are disposed in the pixel groups adjacent to edges of at least two corners of the display area and that are disposed in a plurality of first pixels that display the same color among a plurality of pixels included in the pixel group.

What is claimed is: 
     
       1. A display device comprising:
 a substrate including a display area in which a plurality of pixel groups are disposed and a peripheral area disposed around the display area; and 
 a plurality of alignment keys disposed on the substrate, 
 wherein each of the pixel groups includes a plurality of pixels displaying different colors, 
 the plurality of alignment keys include a plurality of first alignment keys that are disposed in the pixel groups adjacent to edges of at least two corners of the display area and that are disposed in a plurality of first pixels that display a same color as each other among the plurality of pixels included in the pixel groups, and 
 each of the plurality of pixels includes a pixel electrode, and the pixel electrode overlaps an entirety of each of the plurality of alignment keys. 
 
     
     
       2. The display device of  claim 1 , wherein
 each of the plurality of pixels includes a display portion that displays light, and 
 the first alignment key overlaps the display portion of the first pixel. 
 
     
     
       3. The display device of  claim 2 , wherein
 the first pixel is disposed at a center of the plurality of pixels included in the pixel group. 
 
     
     
       4. The display device of  claim 2 , wherein
 the first pixel includes the pixel electrode disposed in the display portion, 
 the pixel electrode includes a stem electrode and a plurality of branch-electrodes connected to the stem electrode, and 
 the first alignment key overlaps the stem electrode. 
 
     
     
       5. The display device of  claim 4 , wherein
 the stem includes a cross shape, 
 the first alignment key overlaps and encloses a center of the stem having the cross shape, and 
 the first alignment key includes a portion extending along the stem electrode having the cross shape. 
 
     
     
       6. The display device of  claim 2 , wherein
 the display portion included in the pixel includes a first display portion and a second display portion that display different luminances from each other with respect to an image signal, and 
 the first alignment key is disposed in the display portion that displays relatively lower luminance among the first display portion and the second display portion. 
 
     
     
       7. The display device of  claim 2 , wherein
 an edge of the substrate includes a first edge extending along a first direction, and a second edge and a third edge that are connected to the first edge and extending along a second direction substantially perpendicular to the first direction, and 
 a distance from the first alignment key closest to the second edge to the second edge is equal to a distance from the third edge to the first alignment key closest to the third edge. 
 
     
     
       8. The display device of  claim 1 , wherein
 the substrate includes a first edge extending along a first direction, and 
 the plurality of alignment keys further include a plurality of second alignment keys that are disposed in the pixel group disposed closest to the first edge among the plurality of pixel groups and that are disposed in a plurality of second pixels that display a same color as each other among the plurality of pixels included in the pixel groups. 
 
     
     
       9. A display device comprising:
 a substrate including a display area in which a plurality of pixel groups are disposed and a peripheral area disposed around the display area; and 
 a plurality of alignment keys disposed on the substrate, 
 wherein each of the pixel groups includes a plurality of pixels displaying different colors, 
 the substrate includes a first edge extending along a first direction, 
 the plurality of alignment keys include a plurality of first alignment keys that are disposed in the pixel group disposed closest to the first edge and that are disposed in display portions of a plurality of first pixels that display a same color as each other among the plurality of pixels included in the pixel groups, and 
 each of the plurality of pixels includes a pixel electrode, and the pixel electrode overlaps an entirety of each of the plurality of alignment keys. 
 
     
     
       10. The display device of  claim 9 , wherein
 each of the plurality of pixels includes a display portion that displays light, and 
 the first alignment key overlaps the display portion of the first pixel. 
 
     
     
       11. The display device of  claim 10 , wherein
 the first pixel displays a lowest luminance among the plurality of pixels included in the pixel group with respect to an input image signal. 
 
     
     
       12. The display device of  claim 10 , wherein
 the first pixel includes the pixel electrode disposed in the display portion, 
 the pixel electrode includes a stem electrode and a plurality of branch electrodes connected to the stem electrode, and 
 the first alignment key overlaps the stem electrode. 
 
     
     
       13. The display device of  claim 10 , wherein
 the display portion included in the pixel includes a first display portion and a second display portion that display different luminances from each other with respect to an image signal, and 
 the first alignment key is disposed in the display portion closer to the first edge among the first display portion and the second display portion included in the pixel. 
 
     
     
       14. The display device of  claim 10 ,
 the display device further comprises a driving circuit portion attached to the substrate, 
 wherein two adjacent first alignment keys are disposed at opposite sides of the driving circuit portion based on a center of the driving circuit portion. 
 
     
     
       15. The display device of  claim 10 , the display device further comprises a plurality of driving circuit portions attached to the substrate,
 wherein the first alignment key is correspondingly disposed between two adjacent driving circuit portions among the plurality of driving circuit portions, and 
 a distance from a center of the first alignment key to a centers of a first driving circuit portion of the two adjacent driving circuit portions is equal to a distance from the center of the first alignment key to a center of a second driving circuit portion of the two adjacent driving circuit portions. 
 
     
     
       16. The display device of  claim 10 , wherein
 the first pixel is disposed closest to the first edge among the plurality of pixels included in the pixel group. 
 
     
     
       17. The display device of  claim 16 , wherein
 the display portion included in the pixel includes a first display portion and a second display portion that display different luminances from each other with respect to an image signal, and 
 the first alignment key is disposed in a display portion that displays relatively lower luminance among the first display portion and the second display portion included in the pixel. 
 
     
     
       18. The display device of  claim 9 , wherein
 the substrate further includes a second edge connected to the first edge and extending along a second direction substantially perpendicular to the first direction, 
 the plurality of alignment keys further include a plurality of second alignment keys that are disposed in the pixel group disposed closest to the second edge among the plurality of pixel groups and that are disposed in display portions of a plurality of second pixels that display a same color as each other among the plurality of pixels included in the pixel groups, and 
 the second pixel and the first pixel display the same color as each other. 
 
     
     
       19. A display device comprising:
 a substrate including a display area in which a plurality of pixel groups are disposed and a peripheral area disposed around the display area; and 
 an alignment key disposed on the substrate, 
 wherein each of the pixel groups includes a plurality of pixels displaying different colors, 
 a first pixel included in the plurality of pixels includes a pixel electrode disposed in a display portion that displays light, 
 the pixel electrode includes a stem electrode and a plurality of branch-electrodes connected to the stem electrode, and 
 the alignment key overlaps the stem electrode and is opaque. 
 
     
     
       20. The display device of  claim 19 , wherein
 the stem includes a cross shape, 
 the first alignment key overlaps and encloses a center of the stem electrode having the cross shape, and 
 the first alignment key includes a portion extending along the stem electrode having the cross shape.